Lever system teaching tool



FIG. 1 is top perspective view of a lever system teaching tool showing our new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a first side elevational view thereof;

FIG. 4 is a second side elevational view thereof;

FIG. 5 is a first end elevational view thereof;

FIG. 6 is a second end elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the drawings illustrate portions of the lever system teaching tool that form no part of the claim.

The wire frame lines shown throughout the views depict surface contour. 

CLAIM The ornamental design for a lever system teaching tool, as shown and described. 